Type-writing machine.



U. G. FULLER.

I TYPE WRITING MACHINE. APPLICATION FILED ABLE/1,1908.

Patented May 11, 1909.

UNITED STA ES P ENT OFF R,

i ULYssEs e. ruLLEaonnAR-rFoRD, CONNECTICUT,ASSIGNOR'TGUNDERWOGDTrPnwRiTEaoonmur, OF'NEW roan, N. Y., A ooneoaariou on-nnw quasar.

ZTYEE WBITIKGAMWNE; I

specification'of Letters Patent. I 'PatentedMay 11, 19G9.

erpiicanon filed April 24; 1908. Serial no. 428,908.

.To allwhom itmay concern:

.Be it known. :that'I, ULYssnsGJ Fume, a citizen of the-JUnitedfStates,residing in Hartford inwthe county of Hartford .and

- State of Connecticut,- ha ve-invented certain new and usefulImprovements Type- WritingiVIachines-of which the following is 'aspecification.

Thisinvention, relates-to paper feedingdevices of. typewritlngnnachin'es, and. IS in the nature of an imprdvement upon the "mechanismdisclosed'in Patent'iNq. 889,855

to J McLaughlin, inwhich the ?platen is swung. backwardlyy'and 1.forwardly by a crank, the first movementto bring the-platen to positionto-r'eceiveabill', and the second movement to bring the bill to theprinting point; said application relating particularly to means forsecuring blank spaces between the carbon entries ofsuccessive bills onecarbon sheet which is retained-in themachine. In said application, acrank is shown mounted on the -:platenframe, but is normally out ofengagement with theplaten,

- a single swinging movement of the crank serving-to rotate the platen.The crank is mounted loosely uponthe platenaxle, and

a pawl or dog is pivoted upon the crank in position to engage a notchedor toothed wheel, the latter being fixed to the platen; a

spring normally holding-the pawl out of engagement with the notchedwheel. A single movement of the crank throws the pawlinto engagementwith the notched wheel, such engagement being mechanically maintaineduntil the crank is swung back to normal po-' sition, whereupon thespring throws the pa'wl or dogout of engagement with the toothed wheel,and also serves to hold the 40 crankin its normal position. In saidapplication, the crank-operating dog is caused.

to skip one or more notches or teeth of the wheel'during the initialportion of-the initial stroke of the crank (or other finger piece) andthen to engage said wheel to turn it around, 'so that, the platen isturned backwardly during the remainder of said stroke o the crank. Theengagement of the dog with said wheel is also maintained during theentire return movement of.the crank to normal position, so that theforward rota- "tion of the platen effected by said wheel is greater-thanthe baekwardrotation thereof.

5 Thus the platen is caused to turn back- *wurdly a relatively shortdistance to receive .-simpli{fy,.=.and improve "the latch or trip 0rd othe immediately. preceding bill.

The ohject -ofthe present invention is to which causes the do to skip'the-teeth of the matched wheel toe set the spacing :between thesuccessive bills=on 'the earbonisheet. To this e'nd, Iwprovide-a'pivoted arm or'rlatch: having-at one end 'alateral tonguebr pro-.jeotion which forms a substantial continuation of the circulanguidethat engages the dog pin to maintain the dog in engagement withthenotched wheel. I provide upon the so stop disk a spring to lift the-dogrpin-up past the end-of-said tongue, so. that the-pin may travel[behind or aboveasaid ton me to' hold the dog away from thewheel,-airing the initial portion of the. initial zstrokelofs the crank..Thepirt engagesa-be-vel formed upon the stationary sto disk, and is,caused thereby-to .throwthe 0g into engagement with the notched wheel,such engagement being maintained by means of the circular; 9'0

uidmg wallusually provided upon the stop disk or rack. Upon said latchbackot' the tongue, 1. form an abutment-which'is-en- T gaged by'the dogpin at the return stroke of the crankto arrest the same. 1 also=providee96' a yielding fingen to engage the-pin tohold 'the crankagainst accidental movementduring the working of the typewritingmachine. Other features and advantages will here'- 'inafter appear. 00.In the accompanying-drawings, Figure 1 is a plan of the platen andplaten'trame, partly broken away, oian Underwood front striketypewri-ting machine. embodyingmy normalppsition-of disuse. I Figs. 2to-6.are diagrams showing different stages in the movements of the crankand itsappurtenances.- -Fig.'7--shows the latch. FigaS is a I 5perspective of thenpper portion of theetop by. a e aceon the-recordsheet from the recq in'iprovements, the crank being Sl'10WI1:1Il 34.105

disk and the, latch pivoted thei eon, Fig. 9 is an elevation showingthencrank m'normal position. Fig. 10 shows the same swung forwardly andconnected to the notched the adjust:

for-ward stroke of the crank, Fig lQ is a p rigid therewith.

wheel. Fig, 11 shows the crank arrested by le stop at the completion ofthe sectional front elevation taken along the platen axle Fig. 13 showsthe crank, and

derwood typewriting machine is fixed upon an axle 2 journaled in theends 3, of a platen frame, the end of the axle projecting through theplaten frame end andhaving a fingerwheel 6 thereon by means of which theplaten inay'be rotated forwardly or back-' 'wa-rdly to an unlimitedextent. The platen isalso provided with the usual line-spacing :dev'ces,of which a toothed line-space wheel .7 a d a yielding detent- 8 thereforare seen at Fig. 1. Said line-space wheel is advanced -intern'1ittentlyby a-pawl 9 and lever 9; -Upon the end ofthe platen axle is secured ahub 10 of a wheel 14 having teeth or notches 15 agreeing 1 number withthe teeth I receive a block 1.8

upon a sleeve 19 on the'line-space Wheel 7.

The wheel 14 is rotatable by means of a slide or dog 16 having a tooth17 to engagethe teeth 15 of the wheel, but normally disengagedtherefrom, as at Figs. 1, 2 and 9,,

to permit independent rotation of the wheel,

14 and the platen 1. Said dog or part 16 1s attached by a screw 18 to.a. plate 18 on :the opposite face offa crank 19, the latter having alongitudinal guiding slot 20, to which forms part of the plate 18. Thecrank has a hub l9 to it axle 2.

In order to elfect backward'rotation of the platen, the crank is swungfrom its normal rear position, Figs. 1, 2, 9, forwardly as at Fig. 3,this initial portion of the movement of the crank causing the tooth 17to pass'idly by two -or more teeth of the wheel 14, The dog carries apin 21 which during such initial portion of the crank movement 7 passesidly along over the tongue 22 formed upon an arm or latch 23, which ispivoted at2 lupon a fixed disk25, the latter mount.- ed loosely upon thesleeve 19, but secured against rotation by means of a link 26 con-}ieeting it to a stud 27 upon the platen "ramc.

Won the pin 21 reaches the end of the tongue-Q2, Fig. I), it engages abevel 2S 't'ormed on said disk, and during further movemcnt'ot the crankis cannncd by said bevel toward the plalen axle 2-, Fig. l, to cause thedog tooth IT to engage one of the teeth of the wheel l l'fl igs. 4tand10.. he crank is wung 'l'orwm-rlly still more until it secured upon theplaten is arrested by engagement with a stop 29, the latter mounted ;ona swinging arm 30. and having a pin 31 to engage any of a series of stopholes32 in the disk 25. After the engagement of the dog 17 with theWheel 14', such engagement is preserved by reason of the engagement{with the pin 21 with a circular guiding wall 33 formed; upon thedisk-around the wheel, said wall acting to confine the dhg, so thatitcannot escape from wheel, and hence the platen must rotate backwardlyand forwardly with the crank 19, which is provided with a handle 34.

Upon the-return strokeof the crank the pin 21 passes from the circularguiding wall 33 onto the under side of the tongue 22, and

rides along said tonguefwhieh forms substantially a continuation of saidcircular guiding wall, and hence thetooth 1? of the dog is maintained inengagement with the wheel 14, and continues to turn the Latterduring'the entire return stroke of the crank 19, so that the distancethrough which the platenturns forward after the" fresh bill isintroduced is greater than the distance that 96 it was turned back toreceive said bill, thus introducing a blank space between the entries onthe carbon sheet WlllCh remains in -the machine during the withdrawal ofthe old bill and the insertion of the new vone.

Upon the completion of the return stroke o'f'the crank a spring 35,provided upon the stop disk, engages the 'pin 21, and throws-git up pastthe end of the tongue 22, which is 1 nearest the'pivot 2% of the latch;thepin I engaging an abutment" 36 formed upon' siaid #latch-to arrestthe crank. A spring finger 37 secured upon the edge of the'stop disk 25normally engages the pin 21, Fig. 2, to hold the crank 19 yieldiuglyagainst accidental movementduring the operation of the typewriting'll'ltlCllltlfl; and said finger 37 also forms a support for the pin '21during the movement of the latter from Fig. 2 to Fig. '3 to enable saidpin to act upon the'tong-ue 22 to swing the arm slightly inward, if

. desired, to'condnce to ease of action of thedevice. After the pin 21passes around the tongue. t ursprinn' 35 hearing against the arm 23returns the latter to normal position, Fig.- I. The operator simplygrasps the han- (lle 3!, and pulls ,the crank forward as far as it willgo. and then after introducing a new bill pushes the crank back toitsstarting point,whereupon the-first line of writing may be begun upon thenew bill Without attention l'rhm the operator to the matter of properlyseparating the records on the rfimrtlslzcc!. p Having thus describedmyinvention, claim: 1 '"i 1. In a typewriting machine; the combine lionwith a revoluble platen and a notched wheel connected thereto, of crankmounted to swing about the axis of saidnotchedf gg wheel, adog mountedupon said crank for independent? movement to engage said notched wheel,but normally disengaged from the wheel, a pin upon said dog, a guide toengage said pin to retain the dog in en- 1 gagemei'it with saidnotchediwheel, a pivoted arm or latch having at one end a lateraltongue, saiehtbngue terminating between the ends of the pivoted arm orlatch, and formmg a substantialcontinuation of said guide, and;. meansto lift the pm up past the end of said tongue, so that the pin maytravel behindor above said tongue to hold the dog away from, thewheelduring the initial portion of the initial stroke of-the crank, a devicebeing provided adjacent to said tongue to be engaged by said pin duringthe initial stroke of the crank, to enable said pin to force said tongueaside and-cause the dog tooth to engage a notch ofthe wheel.

2. In .a typewritmg machlne, the combinatlon with arevoluble platen anda notched -wheel connected thereto, of a crank mounted to swing aboutthe axis of said notched bet-ween the ends of the pivoted arm or latch,a spring being provided to press the.

pin up pastthe end of said tongue, so that the pin may travel behind orabove said tongue to hold the dog awayfrom the wheel durin the initialportion of the ini-- vt-ial stroke 0? the crank, saidwall being providedwith a beveled end adjacent to said "tongue, to be engaged by saidpinduring the initial stroke of the crank, and to enable saidpin to forcesaid tongue aside, and to cause the dog tooth to engage a notch of thewheel,

3. In a typewriting machine, the combination with a revoluble platen anda notched wheel connected thereto, of a crank mounted to swing about theaxis of said notched strwheel, a dog mounted upon said crank for in-.dependent movement to engage said notched wheel, but normallydisengaged from the Wheel,-a projecting pin upon said dog, a circularguiding ,wall to engage send pm to retain the dog in-engagement withsaid notched wheel, a pivoted yleldmg arm or latch having at one end alateral tongue, said tongue forming a substantlal continuation or" saidguiding wall, and terminating Ybetwe'en the ends of the pivoted arm orlatch, a spring being provided to press the pin up past the end of saidtongue, so that the pin may travel behind or above said tongue to holdthe dog away from the wheel during the initial portion of the initialstroke of the crank, said wall being provided'with a. beveled endadjacent to said tongue, to be engaged by said pin during the initialstroke of the crank, and to enable said pin to force said tongue aside,and to cause the dog tooth to engage a notch of the wheel, the arm orlatch being provided with a stop to engage said pin to limit the returnmovement of the crank,

4. In a typewriting machine, the combination with a'revoluble platen anda notched wheel connected thereto, of a crank mounted to swing about theaxis ofsaid notched wheel, adog' mounted uponsaid c ank for independentmovement to engage said notched wheel, but normally disengaged from thewheel, a pin upon said dog, a guide to engage said pin to retain the dogin engagement with said notched wheel, a pivoted arm or latch having atone end'a lateral tongue, said tongue terminating between the ends ofthe pivoted arm or latch, and form-t mg a substantial continuation ofsaid guide, means to lift the pm up past the end of said tongue, so thatthe pin may travel behind'or above sald tongue to hold the dog awayiromthe wheel during the initial portion of the initial stroke of the crank,a device being provided ad acent to said tongue to be ena 'ed vbv said)in durin the initial stroke ofthe crank, to enable said pin to forcesaid tongue aside and cause the dog toothto engage a notch of the wheel,and a stop adjacent to the end of said tongue, .to limit the returnmovement of said crank.'

5. In a. typewriting machine, the con'ihination with arfevoluble platenand a notched wlieel connected thereto, of a crank mounted to swingabout the axis of said notched wheel, a dog mounted upon said crank forindependent movement to engage said notched wheel, but normallydisengaged from the wheel, a pin upon said dog, a circular guiding wallto engage said pin to" retain the dog in engagement with said notchedWheel, a pivoted arm or latch having at one end a lateral'tongue, saidtongue terminating between the ends of the pivoted arm or latch, andforming a substantial continuation of said guiding wall, a spring finger,at the end of said tongue to press "the pin up past said 'end, so thatthe pinmay travel behind or above said tongue during the initial portionof the initial stroke of the crank, said wall being formed with abeveled end adjacent to'said tongue to be engaged by said pin during theinitial stroke of the crank, to enable said pin to force said tongueaside, and cause the dog tooth to engage a notch of the wheel, and saidspring finger bearing against said arm or latch, to restore said tongueto normal position.

6.' In a typewriting mach ne, the combinajnotched wheel. but normallytion. wit-ha revoluble platen and a notched wheel connected thereto, ofa crank mounted retain the dog in engagement with saidnotched wheel, a.pivoted arm or latch having at one end a lateral tongue, said tongueterminating between the ends of the pivoted arm or latch, and forming asubstantial continuation of said guiding wall, a spring fin ger at theend of said tongue to press the pin up pastsaid end, so that the pin maytravel behind or above said tongue during the initial portion of'theinitial stroke of the crank, said wall being formed with a beveled endadjacent to said tongue to be engaged by said pin during the initialstroke of; the crank, to enable'said pin to force said tongue aside,and'cause the dog tooth to engage a notch of the wheel, and said springfinger bearing against said arm or latch, to restore said tongue tonormal position; a' stop being fofiitied upon said s o spring finger, toarrest said crank upon Isa/T611111)IllOVGlIlQllt. 1 J

In a typewriting machine, the combination with a revoluble platen and anotched wheel connected thereto, of a crank mounted to swing about theaxis of said notched wheel, a dog mounted upon said crank forindependentmovement to en age StLICl notched wheel, but normally isengaged from theWheel, a pm upon said dog, a circula-r guldlng Wall to engage said pm toretain the dog in engagement with said notched Wheel, a pivoted arm orlatch having a lateral tongue, said tongue forming a substantialcontinuation of said guidingwall, means to carry the pin up past the endof said tongue, so that the pin may travel behind or above said tongueduring the initial portion ofthe initial stroke ot the crank, said wallbeing formed with a beveled end adjacent to said tongue to be engaged bysaid pin during the initial stroke of the crank, and to enable said pinto force said tongue aside and cause the dog tooth to en gage a notch ofthe wheel, ant a spring finger bearing against said pin to prevent Vlioration of thecrank when in normal position. Y

8. In a typewriting machine, the combination with a rcvoluble platen anda notched wheel connected thereto, of a crank mounted to' swing aboutthe axis of said notched,

wheel, at dog mountedupon said crank' for independent inovement' toengage said notched .wheel. but normal-1y disengaged from the wheeha pinupon said dog, a circular guiding Wall to engage said {Jim to retain thedog in engagement with said notched wheel. a pivoted arm or latch havinga lateral tongue, said tongue forming a substantial continuation of saidwall, means to 'arry the pin up past the end of said tongue, so that thepin may travel behind or above said tongue during the initial portion ofthe initial stroke of the crank, said wall being formed witha beveledend adjacent to said tongue to be engaged by said pin during the initialstroke ofthecrank, and to enable said pin to force said tongue aside andcause the dog tooth to engage a notch of the wheel, and a spring fingerbearing against said pin to prevent vibration of the crank when innormal position; said spring finger extending along over said tongue toform a bearing or guide for said pin during a portion of its stroke.

ULYSSES G. FULLER.

L. D. BROUGHTON.

guiding

